So, just what is a euro cylinder lock? Euro cylinder locks are one of the most widely used door lock types in the UK.
These devices are a form of pin tumbler, meaning that they contain pins of varying lengths which press against the serrated edges of the inserted key in order to detect the correct pattern for unlocking.
Pin tumbler locks frequently feature a cylinder design and euro is a particular profile (cross-sectional design) of cylinder lock. The cylindrical barrel is easy to repair and replacements allow you to change the compatible key and increase security. To do so, simply loosen a screw, slide out the cylinder, and replace it with one of the same size.
Some euro locks feature five pins and others six. The latter costs a little more but provide an additional level of security.
Euro cylinders locks are also known as euro lock barrels.